Juno 60 lfo trigger help(no button)

[mschenkel]

First post here with a littler preface: I'm an idiot.
So I just got this Juno 60.
Trying to fix this here and that there it happened that I shorted the lfo trigger. No, not just the button but the whole thing.
Luckily enough the env trigger is still working so the damage is limited to the lfo trigger. And the damage is that the lfo won't trigger, nor in manual nor in auto because...well I shorted it at a global level. It is always on for the Pwm while it always off
Is in here who:
can tell me that s**t happens and it's nothing too serious
can tell me which component/s I blew and which on which wall should I bang my head against.

Thanks so much

[Helihammer]

Don’t know if you still have the Juno or if you ever figured out what happened but I did the exact same thing the other day.

The LFO still modulates the PWM but will no longer affect the DCO or the VCF (the sliders at those locations don’t do anything).

I’ll have the synth back together soon and will post my progress in tracking down the blown parts. Did you ever figure it out?

[Helihammer]

I replaced transistor TR20 and that fixed the LFO, but the manual trigger still didn’t work. I found that I had lifted the collector trace on TR20. I fixed that and everything works now and the LFO can be triggered manually as well. I used a 2N3904 and I’ll bet many other general purpose NPNs would work fine.